Practice
Subarachnoid hemorrhage
Shannon M. Fernando and Jeffrey J. Perry
CMAJ November 20, 2017 189 (46) E1421; DOI: https://doi.org/10.1503/cmaj.170893
Shannon M. Fernando
Department of Emergency Medicine (Fernando, Perry); Division of Critical Care, Department of Medicine (Fernando), University of Ottawa; Clinical Epidemiology Program (Perry), Ottawa Hospital Research Institute, Ottawa, Ont.
MD MScJeffrey J. Perry
Department of Emergency Medicine (Fernando, Perry); Division of Critical Care, Department of Medicine (Fernando), University of Ottawa; Clinical Epidemiology Program (Perry), Ottawa Hospital Research Institute, Ottawa, Ont.
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Subarachnoid hemorrhage
Shannon M. Fernando, Jeffrey J. Perry
CMAJ Nov 2017, 189 (46) E1421; DOI: 10.1503/cmaj.170893
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- Article
- Nontraumatic subarachnoid hemorrhage is an uncommon but potentially fatal cause of headache
- Subarachnoid hemorrhage can confidently be ruled out using specific criteria
- Computed tomography (CT) can rule out subarachnoid hemorrhage within six hours
- At-risk patients presenting after six hours will require a lumbar puncture
- CT angiography may be considered
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